I was able to use gMail (or Hangouts)account in Pidgin client a couple weeks ago. But lately, I got the "Not Authorized" message every time I tried to connect to my gMail account from Pidgin client.
Wondering if something has been changed, or connecting from Pidgin client to gMail (Hangouts) account is not supported anymore.
Here is the config in pidgin client:
In Basic tab:
Protocol: XMPP
Username: gmail account name (without @gmail.com)
Domain: gmail.com
Resource: Empty or gmail.com
Password: password for password
In Advanced tab:
Connection Security: tried all available options
Connect port: 5222
Connect server: talk.google.com
File transfer proxies: